FIX: fix wrongly used plt.show() in examples (scikit-learn#31524)

Author: ChVeen

examples/bicluster/plot_spectral_biclustering.py

@@ -43,7 +43,7 @@
 
 plt.matshow(data, cmap=plt.cm.Blues)
 plt.title("Original dataset")
-_ = plt.show()
+plt.show()
 
 # %%
 # We shuffle the data and the goal is to reconstruct it afterwards using
@@ -62,7 +62,7 @@
 
 plt.matshow(data, cmap=plt.cm.Blues)
 plt.title("Shuffled dataset")
-_ = plt.show()
+plt.show()
 
 # %%
 # Fitting `SpectralBiclustering`
@@ -102,7 +102,7 @@
 
 plt.matshow(reordered_data, cmap=plt.cm.Blues)
 plt.title("After biclustering; rearranged to show biclusters")
-_ = plt.show()
+plt.show()
 
 # %%
 # As a last step, we want to demonstrate the relationships between the row

examples/svm/plot_svm_kernels.py

@@ -79,7 +79,7 @@
 scatter = ax.scatter(X[:, 0], X[:, 1], s=150, c=y, label=y, edgecolors="k")
 ax.legend(*scatter.legend_elements(), loc="upper right", title="Classes")
 ax.set_title("Samples in two-dimensional feature space")
-_ = plt.show()
+plt.show()
 
 # %%
 # We can see that the samples are not clearly separable by a straight line.